SpaceX is retiring the Falcon 9 and not currently selling rides on Starship.
ULA and Blue Origin are recovering from anomalies, and ULA uses Blue Origin engines, so if there is a problem with BE-4 both companies are affected.
Rocket Lab's rocket is small and cannot launch either Leo satellites or the major national security payloads.
No other US launch vehicles are currently operational.
Space X will probably have to keep Falcon 9 around for a while for human spaceflight to ISS, no?
Thanks - that makes more sense, but the OP was being quite general which is why I asked the question.
Rocket lab will have a new medium sized rocket by end of year / early 2027 fwiw